(D) The magnetic flux $\phi$ linked with the loop is given by $\phi = B \cdot A$,where $A = L^2$ is the area of the square loop.Since the magnetic fie

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(D) The magnetic flux $\phi$ linked with the loop is given by $\phi = B \cdot A$,where $A = L^2$ is the area of the square loop.Since the magnetic field $B$ is uniform in time and space,and the loop moves within this field,the area $A$ enclosed by the loop remains constant.According to Faraday's law of electromagnetic induction,the induced electromotive force $(EMF)$ is given by $\varepsilon = -\frac{d\phi}{dt}$.Since $\phi = B \cdot L^2$ is constant,$\frac{d\phi}{dt} = 0$.Therefore,the induced $EMF$ $\varepsilon = 0$.Consequently,the induced current $I = \frac{\varepsilon}{R} = 0$.

Class 12 Physics Electromagnetic Induction Faraday's and Lenz's Law

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$A$ conducting square loop of side $L$ and resistance $R$ moves in its plane with a uniform velocity $v$ perpendicular to one of its sides. $A$ magnetic induction $B$ constant in time and space,pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is

IIT 1989 All IIT

A
$\frac{BLv}{R}$ clockwise
B
$\frac{BLv}{R}$ anticlockwise
C
$\frac{2BLv}{R}$ anticlockwise
D
Zero

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Electromagnetic Induction

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Faraday's and Lenz's Law

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IIT 1989 Paper All IIT years →

An electron moves on a straight line path $XY$ as shown. The $abcd$ is a coil adjacent to the path of the electron. What will be the direction of current,if any,induced in the coil?

MediumAIIMS 1982

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$A$ long solenoid with $15$ turns per $cm$ has a small loop of area $2.0 \,cm^2$ placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from $2.0 \,A$ to $4.0 \,A$ in $0.1 \,s$, the induced emf in the loop while the current is changing is nearly [Take $\pi=3.14$].

DifficultMHT CET 2022

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The magnetic flux (in weber) in a closed circuit of resistance $20 \ \Omega$ varies with time $t$ (in seconds) according to the equation $\phi = 5t^2 - 6t + 9$. The magnitude of the induced current at $t = 0.2 \ s$ is: (in $A$)

EasyMHT CET 2021

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As shown in the figure,a magnet is moved with a fast speed towards a coil at rest. Due to this,the induced electromotive force,induced current,and induced charge in the coil are $E$,$I$,and $Q$ respectively. If the speed of the magnet is doubled,which of the following statements is incorrect?

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Discuss the contribution of different scientists to electromagnetism. Define electromagnetic induction.

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An electron moves on a straight line path $XY$ as shown. The $abcd$ is a coil adjacent to the path of the electron. What will be the direction of current,if any,induced in the coil?

The magnetic flux (in weber) in a closed circuit of resistance $20 \ \Omega$ varies with time $t$ (in seconds) according to the equation $\phi = 5t^2 - 6t + 9$. The magnitude of the induced current at $t = 0.2 \ s$ is: (in $A$)

As shown in the figure,a magnet is moved with a fast speed towards a coil at rest. Due to this,the induced electromotive force,induced current,and induced charge in the coil are $E$,$I$,and $Q$ respectively. If the speed of the magnet is doubled,which of the following statements is incorrect?

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